Morphological and molecular characterization of Aedes aegypti variant collected from Tamil Nadu, India

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dc.contributor.authorKumar, Nirmal Pen_US
dc.contributor.authorKalimuthu, Men_US
dc.contributor.authorKumar, M Senthilen_US
dc.contributor.authorGovindrajan, Ren_US
dc.contributor.authorVenkatesh, Aen_US
dc.contributor.authorParamasivan, Ren_US
dc.contributor.authorKumar, Ashwanien_US
dc.contributor.authorGupta, Bhavnaen_US
dc.date.accessioned2023-06-17T08:43:54Z
dc.date.available2023-06-17T08:43:54Z
dc.date.issued2022-01
dc.description.abstractBackground & objectives: Accurate mosquito species identification is the basis of entomological surveys and effective vector control. Mosquito identification is either done morphologically using diagnostic features mentioned in taxonomic keys or by molecular methods using cytochrome oxidase subunit 1 (coxI) and Internal transcribed spacer 2 (ITS2). Methods: We performed a larval survey for Aedes mosquitoes from eight different geographical regions in Tamil Nadu, India. The mosquitoes collected during the survey were characterized using both morphological and molecular markers. Results: During an entomological survey from eight different geographical regions in Southern India, a morphological variety named Aedes aegypti var. luciensis was observed. The variant mosquitoes were characterized using both morphological and molecular markers. The variant mosquitoes differed only in the dark scaling of 5th segment of hind-tarsi. Around one third to two third of the 5th segment in variant mosquitoes was dark which has been described as white in identification keys. No other significant difference was observed in adults or immature stages. The variation was heritable and coexisting in the field with the type form mosquitoes. Comparison of the genetic profile of coxI and ITS2 were similar in variant and the type form indicating both of them to be conspecific. Interpretation & conclusion: The morphological variant mosquitoes were found genetically similar to the Ae. aegypti type form. However, considering its high prevalence and coexistence with Ae. aegypti type form in different geographical regions, detailed studies on bionomics, ecology, genetics, behavior as well as its plausible role in disease transmission are warranted.en_US
dc.identifier.affiliationsICMR-Vector Control Research Centre, Madurai, Indiaen_US
dc.identifier.affiliationsICMR-Vector Control Research Centre, Medical Complex, Puducherry, Indiaen_US
dc.identifier.citationKumar Nirmal P, Kalimuthu M, Kumar M Senthil, Govindrajan R, Venkatesh A, Paramasivan R, Kumar Ashwani, Gupta Bhavna. Morphological and molecular characterization of Aedes aegypti variant collected from Tamil Nadu, India. Journal of Vector Borne Diseases . 2022 Jan; 59(1): 22-28en_US
dc.identifier.issn0972-9062
dc.identifier.placeIndiaen_US
dc.identifier.urihttps://imsear.searo.who.int/handle/123456789/216861
dc.languageenen_US
dc.publisherWolters Kluwer – Medknowen_US
dc.relation.issuenumber1en_US
dc.relation.volume59en_US
dc.source.urihttps://doi.org/10.4103/0972-9062.331413en_US
dc.subjectAedes aegyptien_US
dc.subjectmorphological varianten_US
dc.subjectAedes aegypti var. luciensisen_US
dc.subjectIndiaen_US
dc.subjectcoxIen_US
dc.titleMorphological and molecular characterization of Aedes aegypti variant collected from Tamil Nadu, Indiaen_US
dc.typeJournal Articleen_US
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